The arrondissement of Muret was created in 1800, abolished in 1803, restored in 1806, abolished
again in 1926 and restored again in 1942.[5] In January 2017 it gained the commune Auragne from the arrondissement of Toulouse, and it lost the commune Aignes to the arrondissement of Toulouse.[4]
As a result of the reorganisation of the cantons of France which came into effect in 2015, the borders of the cantons are no longer related to the borders of the arrondissements. The cantons of the arrondissement of Muret were, as of January 2015:[6]